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| physical half-life (time) | |||
| half-life; radioactive halflife; period (of decay); half-value period; physical half-life (contrary to biological halflife, of a radionuclide or particle); decay period; disintegration period; radioactive half-period | |||
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| physical half-life (time) | |||
| half-life; radioactive halflife; period (of decay); half-value period; physical half-life (contrary to biological halflife, of a radionuclide or particle); decay period; disintegration period; radioactive half-period | |||